42D-Link DIR-850L User Manual
Section 4 - Security
Wireless Connection Setup Wizard
To run the security wizard, click on Setup > Wireless Settings.  Click 
on the Wireless Connection Setup Wizard button.
Enter a name for your wireless network (SSID), one for the 2.4GHz 
frequency and another for the 5GHz frequency. Do not use personal 
information as your SSID since users with wireless devices within 
range of your router will be able to see this information.
Then select one of the following options: 
Automatically: Select this option to automatically generate 
the router’s network key and click Next.
Manually: Select this option to manually enter your network 
key and click Next.